{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Anatomy"], "input": "Both STX243 and STX140 were capable of retarding the growth of MDA - MB - 231 xenograft tumours ( 72 and 63 % , respectively ) , whereas no inhibition was observed for animals treated with 2 - MeOE2 ."}
{"Anatomy": ["MDA - MB - 231 xenograft tumours"]}